﻿using UITTimetable.Data;

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.UI.Popups;
using System.Collections.ObjectModel;
using System.Net.Http;
using Windows.UI.ApplicationSettings;

// The Grouped Items Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234231

namespace UITTimetable {

    /// <summary>
    /// A page that displays a grouped collection of items.
    /// </summary>
    public sealed partial class ViewBy : UITTimetable.Common.LayoutAwarePage {
        public ViewBy() {
            this.InitializeComponent();
        }

        void GroupedItemsPage_CommandsRequested(SettingsPane sender, SettingsPaneCommandsRequestedEventArgs args) {
            TimetableDataSource.AddSettingsCommands(args);
        }

        private List<CommonDataGroup> list = null;
        private TimetableDataGroup group = null;

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="navigationParameter">The parameter value passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
        /// </param>
        /// <param name="pageState">A dictionary of state preserved by this page during an earlier
        /// session.  This will be null the first time a page is visited.</param>
        protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState) {
            // TODO: Create an appropriate data model for your problem domain to replace the sample data
            Dictionary<String, String> state = navigationParameter as Dictionary<String, String>;

            String item_id = state.Where(t => t.Key == "item_id").ElementAt(0).Value;
            String timetable_id = state.Where(t => t.Key == "timetable_id").ElementAt(0).Value;

            if (timetable_id.IndexOf("TKB_CHUNG") >= 0) {
                list = (TimetableDataSource.GetGroup_Design("TKB") as TKBDataGroup).Items.Where(t => t.UniqueId.Equals(timetable_id)).ToList<CommonDataGroup>();
            }
            else {
                list = (TimetableDataSource.GetGroup_Design("TKB_SAVED") as TKBDataGroup).Items.Where(t => t.UniqueId.Equals(timetable_id)).ToList<CommonDataGroup>();
            }

            // Get timetable item
            group = list.Where(t => t.UniqueId.Equals(timetable_id)).ElementAt(0) as TimetableDataGroup;

            ObservableCollection<CommonDataGroup> datagroups = new ObservableCollection<CommonDataGroup>();


            switch (item_id) {
                case "U_DAY":
                    datagroups.Clear();
                    for (int i = 1; i < 8; i++) {
                        var daygroup = new TimetableDataGroup("U_DAY" + i, TimetableDataSource.ThuTrongTuan(i), "subject on " + TimetableDataSource.ThuTrongTuan(i), String.Empty, String.Empty, String.Empty, DateTime.Now, DateTime.Now);
                        var temp = group.Items.Where(t => (t as TimetableSubjectDataItem).NgayHoc == i);
                        foreach (TimetableSubjectDataItem item in temp) {
                            daygroup.Items.Add(item);
                        }
                        datagroups.Add(daygroup);
                    }

                    //Rearrange Sunday

                    var a = datagroups.ElementAt(0);
                    datagroups.RemoveAt(0);
                    datagroups.Add(a);

                    foreach (TimetableDataGroup g in datagroups) {

                        if (g.Items.Count == 0) {
                            g.Items.Add(new TimetableDataItem() {
                                UniqueId = "NOTHING_" + datagroups.IndexOf(g),
                                Title = "no subjects on this day",
                                ShortTitle = "free!",
                                Icon = "\uE0A5"
                            });
                        }
                    }

                    this.DefaultViewModel["Groups"] = datagroups;
                    this.DefaultViewModel["ShortTitle"] = "view by day of week";

                    break;
                case "U_ROOM":

                    List<String> rooms = TimetableDataSource._roomList;

                    datagroups.Clear();
                    foreach (String room in rooms) {
                        var roomgroup = new TimetableDataGroup("U_ROOM" + room, room, "subject held in " + room, String.Empty, String.Empty, String.Empty, DateTime.Now, DateTime.Now);
                        var temp = group.Items.Where(t => (t as TimetableSubjectDataItem).Phong.Equals(room));
                        foreach (TimetableSubjectDataItem item in temp) {
                            roomgroup.Items.Add(item);
                        }
                        datagroups.Add(roomgroup);
                    }

                    foreach (TimetableDataGroup g in datagroups) {

                        if (g.Items.Count == 0) {
                            g.Items.Add(new TimetableDataItem() {
                                UniqueId = "NOTHING_" + datagroups.IndexOf(g),
                                Title = "no subject held on this room",
                                ShortTitle = "free!",
                                Icon = "\uE0A5"
                            });
                        }
                    }

                    this.DefaultViewModel["Groups"] = datagroups;
                    this.DefaultViewModel["ShortTitle"] = "view by rooms";

                    break;
                case "U_TEACHER":
                    break;
            }
            SettingsPane.GetForCurrentView().CommandsRequested += GroupedItemsPage_CommandsRequested;
        }

        /// <summary>
        /// Invoked when a group header is clicked.
        /// </summary>
        /// <param name="sender">The Button used as a group header for the selected group.</param>
        /// <param name="e">Event data that describes how the click was initiated.</param>
        void Header_Click(object sender, RoutedEventArgs e) {
            // Determine what group the Button instance represents
            //var group = (sender as FrameworkElement).DataContext;

            // Navigate to the appropriate destination page, configuring the new page
            // by passing required information as a navigation parameter
            //this.Frame.Navigate(typeof(GroupDetailPage), ((CommonDataGroup)group).UniqueId);
        }

        /// <summary>
        /// Invoked when an item within a group is clicked.
        /// </summary>
        /// <param name="sender">The GridView (or ListView when the application is snapped)
        /// displaying the item clicked.</param>
        /// <param name="e">Event data that describes the item clicked.</param>
        private async void ItemView_ItemClick(object sender, ItemClickEventArgs e) {
            // Navigate to the appropriate destination page, configuring the new page
            // by passing required information as a navigation parameter
            var itemId = ((TimetableDataItem)e.ClickedItem).UniqueId;
            if (itemId.IndexOf("NOTHING_") >= 0) {
            }
            else {
                // Get item in list
                var item = group.Items.Where(s => s.UniqueId.Equals(itemId)).ElementAt(0) as TimetableSubjectDataItem;

                var detail = item.TongHop;

                detail += "\n" + "Credit: " + item.SoTinChi + "\n" + "Lecturer: " + item.GiangVien + "\n" + "Note: " + item.GhiChu;

                var md_detail = new MessageDialog(detail);

                await md_detail.ShowAsync();
            }
        }
    }
}
